<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="./index.css">
</head>
<body>
<div id="list">
  <h2>list</h2>
  <ul id="ul">
    <li><a href="javascript:;" class="my_link">超链接一</a></li>
    <li><a href="javascript:;" class="my_link">超链接二</a></li>
    <li><a href="javascript:;" class="my_link">超链接三</a></li>
  </ul>
</div>
<hr>
<button id="button">点击按钮会变色</button>
<hr>

<button id="hover" class="btn">我是js控制 hover试一下</button>
<hr>
<button class="btn-css">我css控制 hover试一下</button>
<script src="index.js"></script>
<!--<script src="event.js"></script>-->
</body>
</html>
